Volison IDM-7842MG User Manual

5-Ports 10/100M Ethernet Switch plus Isolated MODBUS
Gateway IDM-7842MG User's Manual

Functional introduction

The Modbus protocol is the most widely used protocol in the electronic industrial
equipment, and now it has become a general industrial standard. Through this protocol,
Modbus devices (such as PLC, DCS, HMI, and instruments) can communicate with each
other through a network or serial port. But the Modbus protocol used in the serial port
and the Ethernet network is different, so a gateway is needed to complete the
communication conversion between the two protocols. IDM-7842MG is a modbus
gateway product dedicated to connecting Modbus TCP devices and Modbus RTU/ASCII
devices.
IDM-7842MG is an isolated Modbus gateway device with multiple network ports. It
integrates 5 port 10/100M switches and 2 serial port Modbus gateways. Users can use
any port and 2 port RS-485/232 serial port to convert Modbus TCP and Modbus
RTU/ASCII protocol. The 2 port RS-485/232 serial port has photoelectric isolation. It is
integrated with Modbus TCP, Modbus RTU and Modbus ASCII protocol, and the serial port
can be configured flexibly into RS-485 or RS-232 mode through software, which can
easily realize the connection between Modbus Ethernet device and Modbus serial device.

Product features

1, 32 bit ARM Cortex-m3 CPU
2, 5-Ports 10/100M Ethernet interface, with switch function
3, Support 2-Port RS-485/232 serial port, two serial port can set different baud rate
4. RS-485/232 serial port photoelectric isolation, 1500V isolation voltage, 600W surge
protection, 15KV electrostatic protection
5. Redundant DC9~30V or AC18~30V dual power input
6. Integrated IEEE 802.3 10Base-T,IEEE 802.3u 100Base-T(X),ARP, IP, ICMP, IGMP,
UDP, TCP, DHCP, DNS,MODBUS TCP, MODBUS RTU, MODBUS ASCII
protocol
7. Provide 4 mode of work:
RTU_ Master--TCP_ Slaver, TCP_ Master--RTU_ Slaver
ASCII_ Master--TCP_ Slaver, TCP_ Master--ASCII_ Slaver
8. Maximum support for 32 Modbus TCP master stations and 4 Modbus TCP slave stations
9. Support two Modbus RTU/ASCII master stations and Modbus slave communication
10. The automatic adaptive function of the time interval of the character
11, Provide ID mapping function to realize the management of host ID number
12. The local port, the target IP address, and the target port number can be set
13, Can be configured through Web Server, Telnet, MG Configuration tools
14, MG Configuration tools support
Windows98/me/NT/2000/XP/WIN7/WIN8/WIN10 operating system
15, DIN-Rail Mounting, industrial design, can run steadily in bad environment

Product specification

Ethernet
Standard: 5-Ports 10/100Mbps adaptive Ethernet port
Communication mode: full duplex / half duplex adaptive
Transmission distance: less than 100 meters
Interface type: RJ-45